Continental 66337 Radiator Coolant Hose - Upper

Continental Upper Radiator Coolant Hose

Continental 66337 is a molded upper radiator coolant hose for select Lexus cooling systems. It is built to move glycol-based coolant through the engine cooling circuit with an exact OEM-style shape for proper routing and fit.

Compatible with Lexus LS460, LS600h, GS460, and IS F applications, this molded hose is sized with a 1.440-inch inside diameter at both ends and a 9.610-inch length. Continental 66337 is a direct-fit cooling hose choice for drivers replacing a worn or leaking upper radiator hose on covered Lexus models.

Key Features

• Molded radiator coolant hose for upper cooling-system routing
• 1.440-inch inside diameter at both ends
• 9.610-inch overall length
• EPDM tube and cover for coolant-system service
• Synthetic reinforcement meets or exceeds SAE 20R4EC Class D1 specifications
• Exact OEM configuration for fit and routing accuracy
• Continental 66337 part number for easy identification

Product Details

The Continental Molded line focuses on OE-style hose construction and shape retention for vehicle-specific cooling layouts. This upper radiator coolant hose is formed to match the original configuration, helping maintain proper hose routing in the engine bay. For Lexus LS460, Lexus LS600h, Lexus GS460, and Lexus IS F models, Continental 66337 provides a precise replacement option that aligns with factory dimensions and connection points.

This part cross-references Gates 23478 for the same application.

What It Helps Address

• Coolant seepage from a cracked or aged upper radiator hose
• Softening, swelling, or collapse of the original hose
• Improper hose routing caused by a misshaped replacement
• Cooling-system service on Lexus LS460, LS600h, GS460, or IS F models
• Loss of coolant flow through the upper radiator circuit

Installation Notes

Verify hose routing and connection diameters before installation. Inspect adjoining clamps, radiator necks, and coolant passages for wear or contamination, and replace any damaged mating components as needed. Confirm the vehicle application by year and model, especially for 2012 Lexus IS F vehicles built before 11/1/2011.

Fits 2007-2017 Lexus LS460, Upper. Fits 2012 Lexus IS F, Upper. Fits 2012 Lexus LS600h, Upper. Fits 2008 Lexus LS600h, Upper. Fits 2010-2011 Lexus GS460, Upper. Fits 2010-2011 Lexus IS F, Upper.

Quality Assurance

Continental manufactures this hose to meet or exceed SAE 20R4EC Class D1 specifications, using EPDM construction and synthetic reinforcement for cooling-system service. Continental 66337 is built to OE configuration standards for consistent fitment on the listed Lexus applications.